XF 1.2"You don't have permission to access /forum/index.php on this server." for only 1 area?

Member

Hey folks...getting a bizarre permissions error, but only for one subforum. This message occurs if you try to edit any of the threads in it or even try to hover over your inbox or alerts while in that subforum. All other subforums do not experience this behavior.

This isn't triggering a server error in the log, so I can't really diagnose it. Obviously this isn't a Linux permissions problem because everything else but that forum works fine.